Bigger front sprocket

[Disorderlypunk]

there is more maths to it the bigger the change but the general consensus is 1 tooth is effectively 3 teeth on the rear
was talking to my father today about switching back to the 15 and he said he thought it wouldnt last long given the difference in riding conditions here
if your up and down the motorway all the time and not spending much time town riding a 17 wouldnt be a terrible
14t  3.43 /1
15t  3.2  /1
16t  3      /1
17t  2.82 /1
cant remember the primary reduction but you can see that is a serious change